# User Guide

Everything you need to understand how healpix-plot works.

## Chapters

::::{grid} 1 1 2 2
:gutter: 2

:::{grid-item-card} Concepts
:link: healpix-grid
:link-type: doc
What is a HEALPix grid, levels, indexing schemes, and the HealpixGrid object.
:::

:::{grid-item-card} Interpolation
:link: plot-function
:link-type: doc
All parameters explained: colormap, projection, interpolation, colorbar.
:::

:::{grid-item-card} Sampling grids
:link: sampling-grid
:link-type: doc
How the output pixel grid is defined: dict shorthand, bounding box, or affine transform.
:::

::::

```{toctree}
:maxdepth: 1

healpix-grid
sampling-grid
plot-function
mollview
```